1.Definition: a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States

Related Noun(s):bomber, grinder, hero, hoagie, sub, wedge, zep

Category: General

2.Definition: a professional killer who uses a gun

Related Noun(s):gun, gun for hire, gunman, gunslinger, hired gun, shooter, triggerman

Category: People

3.Definition: a small explosive device that is placed on a railroad track and fires when a train runs over it; the sound of the explosion warns the engineer of danger ahead

Category: Objects

4.Definition: a small firework that consists of a percussion cap and some gravel wrapped in paper; explodes when thrown forcefully against a hard surface

Category: Objects

5.Definition: an explosive device that is set off in an oil well (or a gas well) to start or to increase the flow of oil (or gas)

Category: Objects

6.Definition: any sluggish bottom-dwelling ray of the order Torpediniformes having a rounded body and electric organs on each side of the head capable of emitting strong electric discharges

Related Noun(s):crampfish, numbfish

Category: Animals

7.Definition: armament consisting of a long cylindrical self-propelled underwater projectile that detonates on contact with a target

Category: Objects